Valve for gas-burners.



Patented Mar. I8, |902.

M. C. GILBERT.

VALVE FOR GSBURNERS.

v (Application filed Aug. 8. 1901.) (No Model.)v

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UNITED STAhrens."g

PATENT 'OFFICE.

MERITT C. GILBERT, OF BATTLECREIQ MICHIGAN.

VALVE. FOR GAS-BURN ERS.

SPECIFICATION forming part of Letters Patent N o. 695,637, dated March 18, 1902. Application led August 3,1901. Serial No. 70,793. (No model.)

To all wiz/0m it may concern:

Be it known that I, MERITT C. GILBERT, a Y tizen of the United States, 'residing at the city of Battlecreek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Valves for Gas-Burners,of which the following is a speci-A fication. y Y

- This invention relates tri-improvements in valves for gas-burners, and particularlylto automatic cut-off valves for use in that connection, although it is adapted for usein other relations.

lThe object of the invention is toproyide aV simple, compact, and efficient automatic cutoff or control for the supply of gas ina' gas burner or stove. I

Minor objects will definitely appear in the detailed description to follow. y

I accomplish the objects of my invention by the devices and means described in this specification. t

The invention is clearly defined and pointed out in the claims. Y

A structure embodying the features of my invention is fully illustrated in the accom; panying drawings, Aforming a part of this specification, in'whichv i Figure lis a det-ail sectional view, taken on line 1 1 of Fig. 2, of a gas-burner and its valve connections embodying the features of my invention, the valve proper being shown in full lines. Fig. 2 is a plan view of-a gasburner and-its valve connections embodying the features of my invention. Fig. 3 is a detail longitudinal sectional elevation showing the details of construction, taken on lines 3 3 of Figs. 4 and 5. Fig.V 4 is a detail cross-sectional elevation showing the details of Vcon-fstruction, taken on line 4 4 of Fig. 3. Fig. 5 is a side elevation view of a valve embodying the features of my invention, taken on line 5 5 of Fig. 4. Fig. 6 is an inverted plan view of a portion of the valve,showing the adjustment of the automatic feature. Fig. 7 is a perspective view of the part a. of the automatic valve mechanism. Fig. Sis a perspective view-of the part e of the automatic valve mechanism.

In the drawings all of the sectional views are taken looking in the direction of the little arrows at the ends of the section-lines, and

similar letters of reference refer to similar parts throughout the several views.

Referringto the lettered parts of the drawings, A is the frame or suport of the burner; A,the burner proper. These are of the usual vform.

B is the valve-casing, and B the gas-supply pipe connected therewith.

-C is the main-.valve stem, which may be operated independently of the automatic feature, and C the hand-wheel on the end thereof. These may. be of any form` desired.

The Vvalve casing contains a T-shaped chamber. The threaded plug D'closes one arm ofthe same. A'short rock-shaft D projects through an opening in the center of the plug. Thisshaft is shouldered into a suitable seat in th'e plug, and on its projecting end is a washer D", which is secured to the shaft by-a nut D". Clamped between this washer and nut is the end of a lever E,which projects rearwardly and upwardly, so that the end of the same projects above the surface of the burner, grate, or frame, as clearly appears in Fig.` l. The opposite end of the shaft D restslin and is adapted to rotate'in the end of the hollow shaft a, which'is seated yin thearm of the chamber opposite."v Thisv hollow shaft or sleeve a has an extension a', which projects from the casing opposite the shaft D. vSleeved upon and securedto. the projecting end of the stem a is a thumb-nut c. Projecting inward from the inner end of the sleeve a, is a pin d". The pin a is adapted to engagea pin-d, which passes transversely through the shaft D. Acoiled spring d', seated in the l hollow shaft a, lholds the shaft D in its seat in the plug D'. The pin b projects from the 'stem ct', and-the thumb-nut c is notched at to engage the same. The casing Bis cut away at 'b' b' to form a slot or way in which this pin can be moved, so that whenV the thumb-nut c is rotated the hollow shaft d is also rotated and the projecting pin a, thereon will engage with the pin d in the shaft D, whichlimits the movement of said shaft. I

At right angles to the shaft D is a cylindrical pitman e. This carries the valve-plug e, which is normally held into a suitable seat in the plug f by the coil-spring i, which eny gages and is held in position by/the pin i', projecting from the casing B. The inner end of -Ioo f the pitman is a slim arm e and has a perforation near the end of the same in position to be engaged by the pin d in the shaft D, so that when the shaft is rotated the pitman will be reciprocated and the valve opened or closed.

Having described my invention in detail, I will now describe its operation.

The main valve C being opened, the gas will fill the valve casing. When a utensil is placed upon the burner, the lever E will be depressed, and this will rotate the shaft D, which reciprocates the pitman c and opens the valve, and when the utensil is removed from the burner the spring returns the valve to its seat and cuts off the supply of gas. The valve may be adjusted by turning the thumb-nut c, which limits the movement of the valve, so that the supply of gas will not be entirely cut oit from the burner. The adjustment of the valve is readily and easily effected and does not require any particular skill. Vhen desired, the automatic feature may be locked open and the gas controlled entirely by the valve C in the usual manner.

I have described my invention in detail in the form that I believe to be the most practical and satisfactory. I am aware, however, that it is capable of considerable variation without departing from my invention.

Having thus described my invention, what I claim as new, and desire to secu re by Letters Patent, is-

l. In an automatic cut-off and controlling device for gas-burners, the combination of the casing I3, a hand-valve C- controlling the same, a T- shaped chamber within the valve, a pitman e with an auxiliary valve e on one end to rest against a suitable valve-seat, a spring/tl forholding the same normally against the seat, a rock-shaft D extending through one branch of the T across the center of the same, a lever E connected to said rock-shaft, a sleeve a in the opposite branch of said chainber embracing the rock-shaft D, a stop-pin a" projecting inwardly from the inner end of the sleeve, a notched thumb-nut or button embracing a pin in the extended end a of the sleeve a for adjusting the same, a transverse pin d through the rock-shaft D engaging the hole in the end of the pitman e, all coacting substantially as described for the purpose specified.

2. In an automatic cut-off and controlling device for gas-burners, the combination of the casing B, a hand-valve C controlling the same, a T-shaped chamber within the valve, a pitman e with an auxiliary valve e on one end to rest against a suitable valve-seat, a spring/t' for holding the same normallyagainst the seat, a rock-shaft D exten Wg through one branch of the T across th mter ofthe same, a lever E connected to said rock-shaft, a sleeve ain the opposite branch of said chamber embracing the rockshaft D, a stop-pin a projecting inwardly from the inner end of the sleeve, a transverse pin d through the rock-shaft D engaging the hole in the end of the pitman e, all coacting substantially as described for the purpose specied.

3. In an automatic cut-od and controlling device for gas-bnrners, the combination of the casing B, a T-shaped chamber Within the valve, a pitman e with an auxiliary valve e on one end to rest against a suitable valveseat, a spring t for holding the same normally against the seat, a rock-shaft D extending through one branch of the T across the center of the same, a lever E connected to said rock-shaft, a sleeve a in the opposite branch of said chamber embracing the rock-shaft D, a stoppin a" projecting inwardly from the inner end of the sleeve, a notched thumb-nut or button embracing a pin in the extended end a of the sleeve a for adjusting the same, a transverse pin CZ through the roclnshaft D engaging the hole in the end of the pitman e, all coacting substantially as described for the purpose specified.

4. In an automatic cut-oft' and controlling device for gas-burners, the combination of a suitable valve-casing having a T- shaped chamber therein, a valve in the main body of the T having a spring for holding it normally closed and a pitman extending therefrom, a rock-shaft in one branch of the T with a lever extending above the surface of the burner or burner-grate, an adjustable stop to engage the said rock-shaft to hold the valve slightly open and a connection between the rockshaft and the valve.

5. In an automatic cut-oft and controlling device for gas-burners, the combination of a suitable valve-casing having a T- shaped chamber therein, a valve in the main body of the T having a spring for holding it normally closed and a pitman extending therefrom, a rock-shaft in one branch of the T with a lever extending above the surface of the burner or burner-grate, a stop to engage the said rock-shaft to hold the valve slightly open and a connection between the rock-shaft and the valve.

In witness whereof I have hereunto set my hand and seal in the presence of two witnesses.

Mnnirr c. GILBERT. [n sf| IOO 

